The ………lens focuses light beam in its focal point. A) longitudinal B) converging C) diverging D) plane
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This type of lens is called a converging lens. Show more…
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A beam of parallel rays is brought to a focus by a plano-convex lens. A thin concave lens of the same focal length is joined to the first lens. The effect of this is (a) the focal points shifts away from the lens by a small distance (b) the focus remains undisturbed (c) the focus shifts to infinity (d) the focal points shifts towards the lens by a small distance
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Round 2
The type of lens that refracts parallel light rays to the far focal point is a (A) converging, concave lens (B) converging, convex lens (C) diverging, concave lens (D) diverging, convex lens (E) All spherical lenses refract parallel rays to the far focus.
For a converging lens, a ray arriving parallel to the optic axis a. appears to come from the principal focal point. b. passes through the principal focal point. c. passes through the "other" focal point. d. appears to come from the "other" focal point.
Sanchit J.
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